28135380

Names of 28135380

• Cardinal: 28135380 can be written as Twenty-eight million, one hundred thirty-five thousand, three hundred eighty.

Scientific notation

• Scientific notation: 2.813538 × 10⁷

Factors of 28135380

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 5183

Divisors of 28135380

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 13 14 15 20 21 26 28 30 35 39 42 52 60 65 70 78 84 91 105 130 140 156 182 195 210 260 273 364 390 420 455 546 780 910 1092 1365 1820 2730 5153 5460 10306 15459 20612 25765 30918 36071 51530 61836 66989 72142 77295 103060 108213 133978 144284 154590 180355 200967 216426 267956 309180 334945 360710 401934 432852 468923 541065 669890 721420 803868 937846 1004835 1082130 1339780 1406769 1875692 2009670 2164260 2344615 2813538 4019340 4689230 5627076 7033845 9378460 14067690 28135380
• Sum of all divisors σ(n): 96977664
• Sum of proper divisors (its aliquot sum) s(n): 68842284
• 28135380 is an abundant number, because the sum of its proper divisors (68842284) is greater than itself. Its abundance is 40706904

Bases of 28135380

• Binary: 1101011010100111111010100₂
• Hexadecimal: 0x1AD4FD4
• Base-36: GR1EC

Squares and roots of 28135380

• 28135380 squared (28135380²) is 791599607744400
• 28135380 cubed (28135380³) is 22271955771739636872000
• The square root of 28135380 is 5304.2794044055
• The cube root of 28135380 is 304.1475074773

Scales and comparisons

• 28,135,380 seconds is equal to 46 weeks, 3 days, 15 hours, 23 minutes.
• To count from 1 to 28,135,380 would take you about seventeen weeks!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 28135380 cubic inches would be around 25.3 feet tall.

Recreational maths with 28135380

• 28135380 backwards is 08353182
• 28135380 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28135380's digits is 30
• More coming soon!